US20160062441A1 - Power managing method and power supplying system applying the power managing method - Google Patents

Power managing method and power supplying system applying the power managing method Download PDF

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US20160062441A1
US20160062441A1 US14/937,895 US201514937895A US2016062441A1 US 20160062441 A1 US20160062441 A1 US 20160062441A1 US 201514937895 A US201514937895 A US 201514937895A US 2016062441 A1 US2016062441 A1 US 2016062441A1
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system
power
modules
power budget
information
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US14/937,895
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Kai-Hsun Chou
Yong-Sheng Lo
Yen-Shuo Chan
Fang-Shan Yang
Chung-Hua Yu
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MediaTek Inc
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MediaTek Inc
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Priority to US201562132674P priority
Priority to PCT/CN2015/076525 priority patent/WO2015158246A1/en
Priority to US201562158061P priority
Priority to US201562174168P priority
Application filed by MediaTek Inc filed Critical MediaTek Inc
Priority to US14/937,895 priority patent/US20160062441A1/en
Assigned to MEDIATEK INC. reassignment MEDIATEK INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHAN, YEN-SHUO, CHOU, KAI-HSUN, YANG, FANG-SHAN, LO, YONG-SHENG, YU, CHUNG-HUA
Priority claimed from JP2015245810A external-priority patent/JP6205401B2/en
Publication of US20160062441A1 publication Critical patent/US20160062441A1/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/32Means for saving power
    • G06F1/3203Power management, i.e. event-based initiation of power-saving mode
    • G06F1/3234Power saving characterised by the action undertaken
    • G06F1/329Power saving characterised by the action undertaken by task scheduling
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/32Means for saving power
    • G06F1/3203Power management, i.e. event-based initiation of power-saving mode
    • G06F1/3206Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3212Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/32Means for saving power
    • G06F1/3203Power management, i.e. event-based initiation of power-saving mode
    • G06F1/3206Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3228Monitoring task completion, e.g. by use of idle timers, stop commands or wait commands
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/32Means for saving power
    • G06F1/3203Power management, i.e. event-based initiation of power-saving mode
    • G06F1/3234Power saving characterised by the action undertaken
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/32Means for saving power
    • G06F1/3203Power management, i.e. event-based initiation of power-saving mode
    • G06F1/3234Power saving characterised by the action undertaken
    • G06F1/3287Power saving characterised by the action undertaken by switching off individual functional units in the computer system
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/10Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply
    • Y02D10/17Power management
    • Y02D10/171Selective power distribution
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/10Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply
    • Y02D10/17Power management
    • Y02D10/174Battery monitoring
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/20Reducing energy consumption by means of multiprocessor or multiprocessing based techniques, other than acting upon the power supply
    • Y02D10/24Scheduling

Abstract

A power managing method, applied to an electronic system comprising a power providing device and one or more system modules, the power providing device comprising at least one battery. The method comprises: (a) determining a total power budget of the power providing device; (b) obtaining system information of the electronic system; (c) determining an available power budget according to the total power budget and the system information; and (d) allocating the available power budget to the one or more system modules according to the system information.

Description

    CROSS REFERENCE TO RELATED APPLICATION
  • This application claims the benefit of following U.S. Provisional Applications: No. 62/132,674, filed on Mar. 13, 2015; No. 62/158,061, filed on May 7, 2015; No. 62/174,168, filed on Jun. 11, 2015. Further, this application is a continuation-in-part application of applicant's earlier application, Serial No. PCT/CN2015/076525, filed Apr. 14, 2015, which claims the benefit of U.S. Provisional Application No. 61/981,294, filed on Apr. 18, 2014.
  • The contents of U.S. Provisional applications and earlier application are incorporated herein by reference.
  • BACKGROUND
  • Conventionally, a portable electronic system such as a mobile phone, a laptop or a tablet pc comprises a battery to provide power. However, if a battery voltage is lower than a power threshold value, the portable electronic system will enter a power saving mode.
  • FIG. 1 is a block diagram illustrating a conventional portable electronic system. As illustrated in FIG. 1, the portable electronic system 100 comprises a battery B and one or more system modules SM_1, SM_2, SM_3 . . . . The system modules can be any device provided in the electronic system, for example, a CPU (central processing unit), a GPU (graphic processing unit) or a flash light. If the battery voltage is higher than the power threshold value, all system modules SM_1, SM_2, SM_3 . . . operate normally. If the battery voltage is lower than the power threshold value, performances for all system modules SM_1, SM_2, SM_3 will be reduced to save power.
  • However, since the performance for all system modules are reduced, the user may feel non-smoothly while using the portable electronic system. Also, the system modules may need different power when the portable electronic system is in the power saving mode, thus the conventional power managing method is not ideal.
  • SUMMARY
  • One objective of the present application is to provide a power managing method that can allocate power not only according to the voltage but also according to real requirements.
  • Another objective of the present application is to provide a power supplying system that can allocate power not only according to the voltage but also according to real requirements.
  • One embodiment of the present application provides a power managing method, applied to an electronic system comprising a power providing device and one or more system modules, the power providing device comprising at least one battery. The method comprises: (a) determining a total power budget of the power providing device; (b) obtaining system information of the electronic system; (c) determining an available power budget according to the total power budget and the system information; and (d) allocating the available power budget to the one or more system modules according to the system information.
  • Another embodiment of the present application provides a power managing method, applied to an electronic system comprising a power providing device and one or more system modules. The method comprises: (a) determining a total power budget of the power providing device; (b) obtaining system information of the electronic system; (c) determining an available power budget according to the total power budget and the system information; and (d) allocating the available power budget to the one or more system modules according to one or more respective real-time operation conditions/requirements of the one or more system modules indicated by the system information.
  • Still another embodiment of the present application provides a power managing method, applied to an electronic system comprising a power providing device and one or more system modules. The method comprises: (a) determining a total power budget of the power providing device; (b) obtaining at least one factor indicating an aging status of the power providing device; (c) determining an available power budget according to the total power budget and the at least one factor indicating an aging status of the power providing device; and (d) allocating the available power budget to the one or more system modules.
  • One embodiment of the present application provides a power supplying system comprising a power providing device, one or more system modules and a power managing module. The power providing device comprises at least one battery, but can be other devices besides the battery. The power managing module is applied to respectively perform above-mentioned steps (a), (b), (c), (d) corresponding to different embodiments. The operations of the power supplying system can be understood based on above-mentioned embodiments, thus are omitted for brevity here.
  • In view of above-mentioned embodiments, the power allocating can be optimized. Also, the electronic system can operate without reducing the performance thereof even the voltage of the power providing device is low, since the power managing method provided by the present application not only refers to the voltage of the power providing device but also refer to other system information.
  • These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a block diagram illustrating a conventional portable electronic system.
  • FIG. 2 is a block diagram illustrating an electronic system according to one embodiment of the present application.
  • FIG. 3 is a flow chart illustrating a power managing method according to one embodiment of the present application.
  • FIG. 4 is a schematic diagram summarizing the relations between the total power budget, the available power budget, and the system information.
  • FIG. 5 is a flow chart illustrating detail steps for the power managing method according to one embodiment of the present application.
  • FIG. 6 is a flow chart illustrating a power managing method according to another embodiment of the present application.
  • FIG. 7 is a flow chart illustrating a power managing method according to another embodiment of the present application.
  • DETAILED DESCRIPTION
  • In following descriptions, several embodiments are provided to explain the concept of the present application. It will be appreciated that these embodiments are only for example and do not mean to limit the scope of the present application.
  • FIG. 2 is a block diagram illustrating an electronic system according to one embodiment of the present application. As illustrated in FIG. 2, the electronic system 200 comprises a power supplying system 201 and one or more system modules SM_1, SM_2 . . . SM_n. The power supplying system 201 comprises a power providing device 203, and a power managing module 205. The electronic system 200 can be a portable electronic system or a non-portable electronic system. The power managing module 205 can be implemented by a hardware (ex. a circuit) or a hardware with firmware (ex. a processing unit). The power providing device 203 comprises at least one battery in this embodiment. However, the power providing device can be other devices such as a voltage transformer in other embodiments. The system modules SM_1, SM_2 . . . SM_n can be any device provided in the electronic system. Please note, three system modules SM_1, SM_2 and SM_n are illustrated in the embodiment of FIG. 2. However, the number for the system modules can be any other value (ex. 1, 2, 4, 5 . . . ).
  • In one embodiment, the system module(s) comprises one or more hardware modules, one or more software modules, or a combination thereof. The hardware module(s) comprises, for example, at least one of: a processor or a processing unit (ex. a CPU), a lighting device (ex. a camera flash light), a communication device (ex. a modem), an image capturing device (ex. an image sensor), an image processing device (ex. a GPU), a sensing device (ex. a G sensor or a touch detecting device), a storage device, and a display device. The one or more software module(s) can be run by the one or more hardware modules and/or controlling respective operation of the hardware modules.
  • FIG. 3 is a flow chart illustrating a power managing method according to one embodiment of the present application. Please refer to both FIG. 2 and FIG. 3 to understand the concept of the present application more clearly. The method in FIG. 3 comprises following steps:
  • Step 301
  • The power managing module 205 determines a total power budget TPB of the power providing device 203.
  • Step 303
  • The power managing module 205 obtains system information SI of the electronic system 200.
  • The system information SI can be computed depending on real-time operating states or predicted operating states of the system modules, or be acquired from stored information (ex. a table stored in the electronic system), or a combination thereof.
  • Step 305
  • The power managing module 205 determines an available power budget according to the total power budget TPB and at least part of the system information SI.
  • Step 307
  • The power managing module 205 allocates the available power budget to the one or more system modules SM_1, SM_2 . . . SM_n according to at least part of the system information SI.
  • In one embodiment, the steps 301-307 in FIG. 3 are initiated when the electronic system meets a specific condition. For example, the electronic system performs a detecting step for detecting whether a voltage provided by the providing device is in a predetermined range. Also, the steps 301-307 are initiated in response to the detection that the voltage provided by the power providing device is in the predetermined range. Alternatively, in another other embodiment, the steps 301-307 are initiated at some pre-set timings. In still another embodiment, the steps 301-307 are initiated while the electronic system receives a trigger command.
  • The definitions of total power budget TPB, system information SI, and available power budget will be described in following descriptions. Also, details for the operation of allocating the available power budget to the one or more system modules will be described in following descriptions as well.
  • In one embodiment, the system information SI comprises either or both of current leakage information and fixed resource budget information. In such an embodiment, the step 303 in FIG. 3 comprises determining the available power budget according to the total power budget TPB and either or both of the current leakage information and the fixed resource budget information. In one embodiment, such an operation can be shown as Equation (1).

  • Available power budget=Total power budget−(Current leakage information and/or Fixed resource budget information)  Equation (1)
  • In one embodiment, the current leakage information indicates the leakage for the one or more system modules SM_1-SM_3 that are currently activated and so can be dynamically varied. For example, the one or more system modules include a CPU and a GPU. The CPU has a leakage x mW while it is activated. The GPU has a leakage y mW while it is activated. In one situation, the current leakage information indicates the value x mW for the CPU when the CPU is currently activated. In another situation, the current leakage information indicates the value y mW for the GPU when the GPU is currently activated. In further another situation, the current leakage information indicates the value x mW added by the value y mW for the CPU when the CPU and the GPU are both currently activated. In one embodiment, the current leakage information can indicate the leakage for a system module even when the system module is not currently activated, for example, in a standby or low-power mode. It is also noted in one embodiment, the system module(s) involving include only system module(s) internal to the electronic system. In an alternative embodiment, the system module(s) involving include not only system module(s) internal to the electronic system but also system module(s) external to the electronic system. In one embodiment, the leakage for the CPU can be referred to a look-up table or calculated by any formulas implemented by any software or hardware or combination form. For example, the leakage for the system module can be determined according to at least one of operating voltage, operating current, temperature, and number of active cores (for CPU case).
  • The fixed resource budget information indicates the power budget that the system module occupies or supposed to occupy. For example, a communication device (e.g. a modem) is activated and needs P mW to keep activated. In such case, the fixed resource budget information is P mW. Alternatively, in another embodiment, the communication device is activated and needs P mW to keep activated and is supposed to further occupy Q mW to process tasks/requests. In such embodiment, the fixed resource budget information is P+Q mW.
  • For more detail, the above-mentioned system information SI may comprise real-time system operating information about one or more respective real-time operation conditions/requirements of the one or more system modules. This also means that the step 307 in FIG. 3 can comprise allocating the available power budget to the one or more system modules according to the real-time system operating information. In one embodiment, the real-time system operating information comprises either or both of one or more real-time operating states (ex. the power that the system module already occupies) and one or more predicted operating states of the one or more system modules (ex. the power that the system module is predicted to occupy). In one embodiment, the one or more real-time operating state is determined by one or more requests that are already generated by the one or more system modules, and/or the predicted operating state is determined by one or more requests that will be generated by the one or more system modules within a predetermined period of time. In another embodiment, the one or more real-time operating state is determined by one or more tasks being processed by the one or more system modules, and/or the predicted operating state is determined by one or more tasks that will be processed by the one or more system modules within a predetermined period of time.
  • With respect to the total power budget, it indicates the total power that can be offered to the electronic system. The total power budget may be determined by the voltage supplied by the power providing device 203. However, the total power budget may be also varied due to aging of the power providing device 203. In one embodiment, the total power budget is determined by the following Equations (2)-(4):

  • Total power budget=Imax*VBAT  Equation (2)

  • Imax=(VBAT−Vmin)/Rtotal  Equation (3)

  • Rtotal=Rpcb+Rac  Equation (4)
  • VBAT indicates the real-time maximum battery voltage. Vmin indicates an off threshold value. In other words, if the battery voltage is lower than the Vmin, the electronic system turns off. Rpcb indicates the impedance of the electronic system, which, for example, includes the impedance of a circuit board. Rac indicates the impedance of the battery.
  • In view of above-mentioned Equations (2)-(4), in one embodiment the step 301 in FIG. 3 determines the total power budget according to at least a maximum battery voltage that the at least one battery can provide (ex. the VBAT). In another embodiment, the step 301 in FIG. 3 determines the total power budget further according to at least one factor indicating an aging status of the at least one battery. For example, the Rac of above-mentioned Equation (4) is the factor indicating the aging status of the battery. Please note the impedance of the battery is not limited to be determined by the aging of the battery, but also can be determined by the type of the battery. For example, a battery with low quality may have high impedance even it is new. On the contrary, a battery with high quality may have low impedance even if the aging thereof is old.
  • It is noted that, in other embodiments, the step 301 in FIG. 3 can still determine the total power budget according to maximum battery voltage that the at least one battery can provide, the factor indicating an aging status of the at least one battery, and further according to a predetermined threshold voltage level (for example but not limited to the Vmin), by using any equations or algorithms to meet different requirements.
  • Furthermore, it is noted the step for determining the total power budget is not limited to above-mentioned combinations. Alternatively, in further another embodiment, the step for determining the total power budget does not determine according to the maximum battery voltage that the at least one battery can provide, but still according to the factor indicating an aging status of the at least one battery.
  • FIG. 4 is a schematic diagram summarizing the relations between the total power budget, the available power budget, and the system information. Please note FIG. 4 is only for the convenience of understanding but does not mean to limit the scope of the present application.
  • In FIG. 4, the blocks 401, 403, 405, 407, 409 indicate different power budgets. Also, the blocks 401_1, 407_1 and 409_1 indicate the factors applied to determine different power budgets. For example, the total power budget 401 can be determined by the factors illustrated in the block 401_1. That is, the total power budget 401 can be determined by at least one of: the maximum battery voltage, the aging status for the battery, the impedance for the electronic system and/or the battery, and a predetermined threshold voltage level. The total power budget 401 can be separated into the available power budget 403 and the system demand budget 405. Accordingly, if the system demand budget 401 is obtained based on system information (ex. SI in FIG. 2), the available power budget 403 can be acquired.
  • The system demand budget 401 can comprise at least one of: current leakage budget 407 and fixed resource budget 409. The current leakage budget 407 can be determined by the current leakage information. The current leakage information can comprise, for example, leakages for the system module(s) illustrated in the block 407_1. The fixed resource budget 409 can be determined by the fixed resource budget information. The fixed resource budget information can comprise, for example, at least one of the real-time operating state and the predicted-time operating state, which are illustrated in the block 409_1. The real-time operating state can be determined by the task that the system module already processes (or processing) or the request that the system module already generates (or generating). Also, the predicted-time operating state can be determined by the task that the system module will process within a predetermined period of time or the request that the system module will generate within a predetermined period of time.
  • After the available power budget is acquired, the power managing module 205 in FIG. 2 can allocate power budget (s) to the system module(s). In other words, respective power budgets can be provided to the one or more system modules. The respective power budgets may be determined according to the system information. In one embodiment, the power managing module 205 can allocate the power budget(s) to the system module(s) based on a specific rule. For example, assuming the available power budget is enough to satisfying any demand of the system module(s), if a GPU is activated, the power managing module 205 will allocate a power budget P_1 to the GPU. In another embodiment, the power managing module 205 allocates the available power budget to the system module further according to task run by the system module and/or request generated by the system module. For example, assuming the available power budget is enough to satisfying any demand of the system module(s), a power budget P_2 is allocated to the GPU if the GPU is processing a task T_1. In another embodiment, the GPU needs to further process a task T_2 after the task T_1 is processed, thus a power budget P_3 besides the power budget P_2 is further allocated to the GPU. In another embodiment, assuming the available power budget is enough to satisfying any demand of the system module(s), if the GPU is activated, it is allocated a power budget P_1, and is further allocated power budget P_2 if the GPU generates a request R1. In another embodiment, the GPU will further generate a request R2 after the request R1 is generated, thus a power budget P_3 besides the power budget P_1, P_2 is further allocated to the GPU.
  • In one embodiment, the above-mentioned power budgets P_1, P_2, P_3 can indicate specific amount of power. In another embodiment, relations between the above-mentioned power budgets P_1, P_2, P_3 and the available power budget are specific ratios.
  • Many methods can be applied to predict the task or request in a following period of time. For example, a control unit is applied to control the operation of GPU. Accordingly, the control unit can know the tasks the GPU will process in a following period of time, or the requests the GPU will generate in a following period of time. It will be appreciated that this prediction method is only an example for explaining and does not mean to limit the scope of the present application.
  • The above-mentioned steps can be applied alone or in combination. Therefore, in view of above-mentioned embodiments, the step 307 in FIG. 3 can further comprise: generating one or more respective power budgets (ex. P_1, P_2, P_3) respectively for the one or more system modules or for one or more tasks (ex. T_1, T_2) or for one or more requests (ex. R1, R2) generated by the one or more system modules according to the system information. The tasks can be associated with the requests.
  • In another embodiment, the system information SI comprises real-time system operating information about one or more respective requests (ex. R1, R2) generated by the one or more system modules.
  • The following equations (5) and (6) are examples for allocating the available power budget.

  • Multiple=[Available power budget/(Task1rp+Task2rp . . . +Task nrp)]  Equation (5)

  • Task nap=Task nrp*Multiple  Equation (6)
  • The Task_1 rp, Task_2 rp . . . indicate the power budget initially requested for tasks. Also, the Task_nap indicate the power budget really allocated to the task. For example, the CPU has a Task_1 and requests for 1200 mW for the Task_1. Also, the communication device has a Task_2 and requests for 800 mW for the Task_2. In such case, the Task_1 rp=1200 mW and the Task_2 rp=800 mW. Also, the available power budget is 1000 mW. Accordingly, based on the Equation (5), the multiple=1000/(1200+800)=0.5.
  • Therefore, based on the Equation (6), the Task_1 ap=1200*0.5=600 mW, and the Task_2 ap=800*0.5=400 mW. Accordingly, the available power budget is allocated as different respective power budgets 600 mW and 400 mW to the CPU and communication device.
  • In view of the embodiment applying Equations (4) and (5), the step of the generating one or more respective power budgets for the one or more system modules according to the system information and the available power budget can further comprise: obtaining a total system real-time requirement according to the one or more respective real-time request generated by the one or more system modules (ex. Task_1 rp+Task_2 rp . . . +Task_nrp). In such a case, the step of the generating one or more respective power budgets for the one or more system modules according to the system information and the available power budget further comprises: generating the respective power budget for each of the one or more system modules or for one or more tasks associated with one or more requests generated by the one or more system modules by the available power budget and a ratio between the total system real-time requirement and the one or more respective requests of each of the one or more system modules. For example, Equation (5) computes the ratio “Multiple”, and the power budget is acquired based on the multiple, as shown in Equation (6).
  • The above-mentioned steps can be summarized in FIG. 5, which is a flowchart illustrating detail steps for the power managing method according to one embodiment of the present application. Please note FIG. 5 is only for the convenience of understanding and does not mean to limit the scope of the present application. In FIG. 5, the system module 1 SM_1 is a CPU, the system module 2 SM_2 is a GPU . . . and the system module n SM_n is the power managing module. Also, in FIG. 5 the system information comprises both the fixed resource budget information and the current leakage information.
  • The flow chart in FIG. 5 comprises following steps:
  • Step 501
  • The electronic system is in a standby state.
  • Step 503
  • Determine if any system module is activated. If yes, go to step 505, if not, go back to the step 501.
  • Step 505
  • Update fixed resource budget information. As illustrated in FIG. 4, the fixed resource budget information can be determined by real time operating states and/or predicted time operating status of the system module(s).
  • Step 507
  • Get current leakage information.
  • Step 509
  • The available power budget is acquired, and the step of allocating power budget is performed. As above-mentioned, the step of allocating power budget can be performed only based on which system modules are activated, and can be performed based on task and/or request as well.
  • As illustrated in FIG. 5, the power budgets P_1, P_2 are respectively allocated to the system modules SM_1, SM_2. The steps of allocating power budget can be implemented via adjusting the factors for the system modules. For example, the voltage and the frequency of the CPU and the GPU are adjusted.
  • As above-mentioned, the power providing device 203 in FIG. 2 is not limited to a battery. In such case, the available power budget is allocated according to real-time operation conditions/requirements. Accordingly, a power managing method illustrated in FIG. 6 can be acquired, which comprises following steps:
  • Step 601
  • Determine a total power budget of the power providing device.
  • Step 603
  • Obtain system information of the electronic system.
  • Step 605
  • Determine an available power budget according to the total power budget and the system information.
  • Step 607
  • Allocate the available power budget to the one or more system modules according to one or more respective real-time operation conditions/requirements of the one or more system modules indicated by the system information.
  • As above-mentioned, the step of allocating power budget can allocate the available power budget according to task and/or request. Accordingly, the step 607 can comprise: generating one or more respective power budgets respectively for the one or more system modules, or for one or more tasks associated with one or more requests generated by the one or more system modules according to the system information and the available power budget.
  • Besides, the aging status for the power providing device may affect the total power budget. For example, the total power budget that an old power supplying circuit can provide is smaller than which of a new power supplying circuit. Accordingly, the embodiment in FIG. 6 can comprise: wherein the system information comprises at least one factor indicating an aging status of the power providing device, and the step 605 comprises determining an available power budget according to at least the total power budget and the at least one factor indicating the aging status of the power providing device.
  • In one embodiment, the available power budget is determined according to the aging status of the power providing device. FIG. 7 is a flowchart illustrates such embodiment, which comprises following steps:
  • Step 701
  • Determine a total power budget of the power providing device.
  • As above-mentioned, the power providing device can be a battery or any device besides a battery.
  • Step 703
  • Obtain at least one factor indicating an aging status of the power providing device.
  • As illustrated in FIG. 4, the total power budget can be determined by at least one of following factors: a maximum battery voltage, an aging status of the power providing device, impedance of the electronic system, or a predetermined threshold voltage level.
  • Step 705
  • Determine an available power budget according to the total power budget and the at least one factor indicating an aging status of the power providing device.
  • Step 707
  • Allocate the available power budget to the one or more system modules.
  • Other detail steps for the embodiment depicted in FIG. 7 can be acquired in view of above-mentioned embodiments, thus are omitted for brevity here.
  • In view of above-mentioned embodiments, the power allocating can be optimized. Also, the electronic system can operate without reducing the performance thereof even the voltage of the power providing device is low, since the power managing method provided by the present application not only refers to the voltage of the power providing device but also refer to other system information.
  • Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

Claims (42)

What is claimed is:
1. A power managing method, applied to an electronic system comprising a power providing device and one or more system modules, the power providing device comprising at least one battery, the method comprising:
(a) determining a total power budget of the power providing device;
(b) obtaining system information of the electronic system;
(c) determining an available power budget according to the total power budget and the system information; and
(d) allocating the available power budget to the one or more system modules according to the system information.
2. The power managing method of claim 1, wherein the system information comprises either or both of current leakage information and fixed resource budgets information, and the step (c) comprises determining the available power budget according to the total power budget and either or both of the current leakage information and the fixed resource budgets information.
3. The power managing method of claim 1, wherein the system information comprises real-time system operating information about one or more respective real-time operation conditions/requirements of the one or more system modules, and the step (d) comprises allocating the available power budget to the one or more system modules according to the real-time system requirement information.
4. The power managing method of claim 3, wherein the real-time system requirement information comprises either or both of one or more real-time operating states and one or more predicted operating states of the one or more system modules.
5. The power managing method of claim 3, wherein the real-time system requirement information comprises information about either of both of one or more requests that are already generated by the one or more system modules and one or more requests that will be generated by the one or more system modules within a predetermined period of time.
6. The power managing method of claim 3, wherein the real-time system operating information comprises either or both of one or more tasks being processed by the one or more system modules and one or more tasks that will be processed by the one or more system modules within a predetermined period of time.
7. The power managing method of claim 1, wherein the step (a) comprises
determining the total power budget according to at least a maximum voltage that the at least one battery can provide.
8. The power managing method of claim 7, wherein the step (a) comprises
determining the total power budget according to the maximum voltage that the at least one battery can provide and further according to at least one factor indicating an aging status of the at least one battery.
9. The power managing method of claim 8, wherein the at least one factor indicating an aging status comprises an impedance of the at least one battery.
10. The power managing method of claim 9, wherein the step (a) comprises
determining the total power budget according to the maximum voltage that the at least one battery can provide and the at least one factor indicating an aging status of the at least one battery and further according to a predetermined threshold voltage level.
11. The power managing method of claim 1, wherein the step (a) comprises
determining the total power budget according to at least one factor indicating an aging status of the at least one battery.
12. The power managing method of claim 1, wherein the one or more system modules comprises one or more hardware modules, one or more software modules, or a combination thereof.
13. The power managing method of claim 12, wherein the one or more hardware modules comprises at least one of: a processor or a processing unit, a lighting device, a communication device, an image capturing device, an image sensing device, a sensing device, a storage device, and a display device.
14. The power managing method of claim 12, wherein the one or more software modules are run by the one or more hardware modules and/or controlling respective operation of the hardware modules.
15. The power managing method of claim 1, further comprising:
detecting whether a voltage provided by the power providing device is in a predetermined range; and
initiating the steps (a)-(d) in response to the detection that the voltage provided by the power providing device is in the predetermined range.
16. The power managing method of claim 1, wherein the step (d) comprises:
generating one or more respective power budgets respectively for the one or more system modules or for one or more tasks associated with one or more requests generated by the one or more system modules according to the system information.
17. The power managing method of claim 16, wherein the system information comprises real-time system operating information about one or more respective requests generated by the one or more system modules, and
the step of the generating one or more respective power budgets for the one or more system modules according to the system information and the available power budget comprises:
obtaining a total system real-time requirement according to the one or more respective real-time request generated by the one or more system modules;
generating the respective power budget for each of the one or more system modules or for one or more tasks associated with one or more requests generated by the one or more system modules by the available power budget and a ratio between the total system real-time requirement and the one or more respective requests of each of the one or more system modules.
18. A power managing method, applied to an electronic system comprising a power providing device and one or more system modules comprising:
(a) determining a total power budget of the power providing device;
(b) obtaining system information of the electronic system;
(c) determining an available power budget according to the total power budget and the system information; and
(d) allocating the available power budget to the one or more system modules according to one or more respective real-time operation conditions/requirements of the one or more system modules indicated by the system information.
19. The power managing method of claim 18, wherein the step (d) comprises:
generating one or more respective power budgets respectively for the one or more system modules, or for one or more tasks associated with one or more requests generated by the one or more system modules according to the system information and the available power budget.
20. The power managing method of claim 18, wherein the system information comprises at least one factor indicating an aging status of the power providing device, and the step (c) comprises determining an available power budget according to at least the total power budget and the at least one factor indicating the aging status of the power providing device.
21. A power managing method, applied to an electronic system comprising a power providing device and one or more system modules, the method comprising:
(a) determining a total power budget of the power providing device;
(b) obtaining at least one factor indicating an aging status of the power providing device;
(c) determining an available power budget according to the total power budget and the at least one factor indicating an aging status of the power providing device; and
(d) allocating the available power budget to the one or more system modules.
22. A power supplying system, comprising:
a power providing device, comprising at least one battery;
one or more system modules; and
a power managing module, configured to determine a total power budget of the power providing device, to obtain system information of the electronic system, to determine an available power budget according to the total power budget and the system information, and to allocate the available power budget to the one or more system modules according to the system information.
23. The power supplying system of claim 22, wherein the system information comprises either or both of current leakage information and fixed resource budgets information, and the step of determining an available power budget according to the total power budget and the system information comprises determining the available power budget according to the total power budget and either or both of the current leakage information and the fixed resource budgets information.
24. The power supplying system of claim 22, wherein the system information comprises real-time system operating information about one or more respective real-time operation conditions/requirements of the one or more system modules, and the step of allocating the available power budget to the one or more system modules comprises allocating the available power budget to the one or more system modules according to the real-time system requirement information.
25. The power supplying system of claim 24, wherein the real-time system requirement information comprises either or both of one or more real-time operating states and one or more predicted operating states of the one or more system modules.
26. The power supplying system of claim 24, wherein the real-time system requirement information comprises information about either of both of one or more requests that are already generated by the one or more system modules and one or more requests that will be generated by the one or more system modules within a predetermined period of time.
27. The power supplying system of claim 24, wherein the real-time system operating information comprises either or both of one or more tasks being processed by the one or more system modules and one or more tasks that will be processed by the one or more system modules within a predetermined period of time.
28. The power supplying system of claim 22, wherein the step of determining a total power budget of the power providing device comprises
determining the total power budget according to at least a maximum voltage that the at least one battery can provide.
29. The power supplying system of claim 28, wherein the step of determining a total power budget of the power providing device comprises
determining the total power budget according to the maximum voltage that the at least one battery can provide and further according to at least one factor indicating an aging status of the at least one battery.
30. The power supplying system of claim 29, wherein the at least one factor indicating an aging status comprises an impedance of the at least one battery.
31. The power supplying system of claim 30, wherein the step of determining a total power budget of the power providing device comprises
determining the total power budget according to the maximum voltage that the at least one battery can provide and the at least one factor indicating an aging status of the at least one battery and further according to a predetermined threshold voltage level.
32. The power supplying system of claim 22, wherein the step of determining a total power budget of the power providing device comprises
determining the total power budget according to at least one factor indicating an aging status of the at least one battery.
33. The power supplying system of claim 22, wherein the one or more system modules comprises one or more hardware modules, one or more software modules, or a combination thereof.
34. The power supplying system of claim 33, wherein the one or more hardware modules comprises at least one of: a processor or a processing unit, a lighting device, a communication device, an image capturing device, an image processing device, a sensing device, a storage device, and a display device.
35. The power supplying system of claim 33, wherein the one or more software modules are run by the one or more hardware modules and/or controlling respective operation of the hardware modules.
36. The power supplying system of claim 22, wherein the power managing module further detects whether a voltage provided by the power providing device is in a predetermined range, and initiate operations of the power managing module in response to the detection that the voltage provided by the power providing device is in the predetermined range.
37. The power supplying system of claim 22, wherein the step of allocating the available power budget to the one or more system modules comprises:
generating one or more respective power budgets respectively for the one or more system modules or for one or more tasks associated with one or more requests generated by the one or more system modules according to the system information.
38. The power supplying system of claim 37, wherein the system information comprises real-time system operating information about one or more respective requests generated by the one or more system modules, and
the step of the generating one or more respective power budgets for the one or more system modules according to the system information and the available power budget comprises:
obtaining a total system real-time requirement according to the one or more respective real-time request generated by the one or more system modules;
generating the respective power budget for each of the one or more system modules or for one or more tasks associated with one or more requests generated by the one or more system modules by the available power budget and a ratio between the total system real-time requirement and the one or more respective requests of each of the one or more system modules.
39. A power supplying system, comprising:
a power providing device, comprising at least one battery;
one or more system modules; and
a power managing module, configured to determine a total power budget of the power providing device, to obtain system information of the electronic system, to determine an available power budget according to the total power budget and the system information, and to allocate the available power budget to the one or more system modules according to one or more respective real-time operation conditions/requirements of the one or more system modules indicated by the system information.
40. The power supplying system of claim 39, wherein the step of allocating the available power budget to the one or more system modules comprises:
generating one or more respective power budgets respectively for the one or more system modules, or for one or more tasks associated with one or more requests generated by the one or more system modules according to the system information and the available power budget.
41. The power supplying system of claim 39, wherein the system information comprises at least one factor indicating an aging status of the power providing device, and the step of determining an available power budget according to the total power budget and the system information comprises determining an available power budget according to at least the total power budget and the at least one factor indicating the aging status of the power providing device.
42. A power supplying system, comprising:
a power providing device, comprising at least one battery;
one or more system modules; and
a power managing module, configured to determining a total power budget of the power providing device, to obtaining at least one factor indicating an aging status of the power providing device, to determine an available power budget according to the total power budget and the at least one factor indicating an aging status of the power providing device, and to allocating the available power budget to the one or more system modules.
US14/937,895 2014-04-18 2015-11-11 Power managing method and power supplying system applying the power managing method Abandoned US20160062441A1 (en)

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US201562158061P true 2015-05-07 2015-05-07
US201562174168P true 2015-06-11 2015-06-11
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EP16159877.6A EP3067779B1 (en) 2015-03-13 2016-03-11 Power managing method and power supplying system applying the power managing method
CN201610140098.XA CN106020404A (en) 2015-03-13 2016-03-11 Power managing method and power supplying system
US15/399,716 US20170177059A1 (en) 2014-04-18 2017-01-05 Power managing method and electronic system applying the power managing method
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